Closure for bottles and jars



- Feb. 11, 1936. M; A. GREENE ET AL CLOSURE FOR BOTTLES AND JARS FiledApril 15, 1933 Patented Feb. 11, 1936 CLOSURE 1 0B BOTTLES AND JARSMichael A. Greene and Daniel m. Gram-Wheeling, W. va assignora toBasel-Atlas Glass 00., Wheeling, WV. Va.,'a corporation of WestVirg'lnia Application llpril 15, 1933, Serial No. 866,374 3 Claims. (01.215-40) This invention relates to metallic caps forbotties and Jars ofthe side-seal type inwhich a gasket is mounted in the skirt of the capand makes sealing contact with the side wall of the container when thecap is forced down to its final position.

One of the primary objects of the invention resides in improving caps ofthis type so that they may be more readily removed from the Jar.

A further object of the invention consists in 7 so forming the loweredge of the skirt of the cap that it will serve not only-to retain thegasket in position within the cap but also will provide a greater areafor the applicationof the pry-oi! tool to prevent the slipping of thetool during removal of the cap.

Another object of .the invention resides in modifying the skirtconstruction so as to stiffen the same to prevent undue distortionduring the prying-oil operation, thereby aiding in removal of the cap aswell as preserving its reseal value. Other obiects and advantages of theinvention will be apparent from the following description when taken inconnection with the accompanying drawing, in which,

Figure 1 is a vertical sectional view of one form of cap about to beapplied to the container. I Figurezisasimilarvlewshowing thecapinsealing position. Figure 3 is a vertical sectional view of a modifledconstruction of cap about to be applied to" the container; and,

' Figure 4 is a similar view showing the modified cap in sealingposition.

The numeral I indicates a jar or other .receptacle provided with a mouth2 and a closure 3 for sealing the same. Below the mouth 2, and spacedonly slightly below the closure! when it is-in sealing position, the jaris provided with an annular flange 4 having a substantially horizontalupper surface 5 for cooperation with a pry-oil! tool.

The exterior wall of the Jar adiacent the mouth 2 is preferably ofcylindrical form, as indicated by the numeral 8, to provide a. centeringportion for the closure 3 when it is loosely mounted on the jar in theinitial step of sealing the same. Below the cylindrical portion 6 thejar shown in Figs. 1 and 2 is provided with a head I about which thegasket is forced when the closure is moved to sealing position. Thishead is slightly rounded, whereas the head I shown in Figs. 3 and 4 issomewhat sharpened.. The closure, to be described, is used with eitherform of finish, 5 and both give a good seal; but the head I permitseasier removal of the closure, while bead furnishes a higher holdingpower.

tion 0 of the skirt also provides a horizontal shelf 10 or abutment llwhich serves as an upper confin-' ing wall for a gasket. The gasket,which is of the side seal yp is indicated by the numeral II. Theinternal diameter of the gasket is slightly greater than the diameter ofthe cylindrical por- 15 tion 6 of the finish, so that. the cap andgasket will easily drop over the cylindrical portion of the finish, andof course its diameter is substantially less than the external diameterof the head I of the jar, so as to provide a sealing flt' between 29these parts.

Formed on the lower edged the skirt 8, is 9. rolled edge or bead 12. Thehead may be rounded or slightly flattened as shown so long as itprovides inwardly and outwardly extending projec- 25 tions it and I4.The projection l3 forms the lower support for the gasket ll cooperatingwith the skirt 8 and upper flange II to securely hold the gasket inproperly led relation with theclosure I.

The outwardly directed portion ll of the has it very considerably aidsin the removal of the cap, for this portion plus the inwardly. directedportion greatly increases the pry-oil area thereby, preventing slippingof the pry-ofl tool during the 36 removal of the cap, which is a commondifliculty encountered in the removing of caps.

The head l2, taken as a whole, has a further function in that itreinforces the skirt of the closure against distortion by the prying-oi!tool. 40 This action of thebead I! not only aids in the removal of theclosure but also by minimizing distortion of the closure preserves itsrseal value.

It will thus be seen that the rolled edge I2 including the inwardly andoutwardly projecting 45 elements l3 and I4 is a very substantialimprovement inclosures of this type in that it performs three distinctfunctions, namely. Supp rts the gasket li,'greatly facilitates removalof the closum from the container, and assists in malntainso ing theshape of the closure for reseal purposes. In the modified constructionof the closure shown in Figures 3 and v4, and referred to by nuflangel1, skirt i8 and gasket i9 correspond with the same elements in theclosure 3, but other means have been provided for performing the severalfunctions of the bead l2 of the previously described form of theinvention.

In this modified form of closure the lower edge of the skirt is firstbent outwardly in a substantially horizontal direction as indicated bynumeral 20, and is then doubled upon itself as indicated at 2| toprovide an inwardly directed flange 22 for supporting the gasket l9. Inother words the metal of the lower edge of the skirt is bent to providea flange which extends both inwardly and outwardly beyond the skirt.This construction has all of the advantages of the first-described formof the invention; the projection 22 supporting the gasket, theprojection 21 providing the additional area upon which the prying-ofitool can act, so that the tool has less chance of slipping, therebyfacilitating removal of the cap, and the two projections togetherproviding the necessary reinforcement to minimize distortion of theclosure and enhance its reseal value.

From the foregoing it will be apparent to those skilled in the art thata materially improved sideseal closure hasbeen provided in that withoutsacrificing any of the sealing qualities of the 010- sure the same maybe readily removed with any convenient tool, and that by reason of thereinforcement of the closure little or no distortion will result,thereby permitting reuse of the closure in temporarily sealing thecontainer from time to time while the contents are being used.

In accordance with the patent statutes we have described herein thepreferred embodiments of the invention, but obviously various changesseal finish, an annular ledge spaced slightly below the finish, apreformed closure including a top portion, a skirt depending therefrom,a gasket mounted on the inner face of the skirt, a bead formed onthelower edge of the skirt, said bead being partially flattened andhaving portions extending inwardly and outwardly from the skirt, theinwardly extending portion of the bead serving as a support for thegasket and the inwardly and outwardly extending portions in cooperativerelation with and spaced from the ledge to facilitate removal of theclosure.

2. In combination with a jar having a side-seal finish, an annular ledgespaced slightly below the finish, a preformed closure including a topportion, a skirt depending therefrom, a gasket mounted on the inner faceof the skirt and extending the full height of the skirt, the lowerportion of the skirt being bent outwardly to form a horizontal fiangeprojecting laterally beyond the skirt, and then bent inwardly againstitself, the free end of the inbent portion projecting inwardly of theskirt, the inwardly extending portion serving as a support for thegasket, and the inwardly and outwardly extending portions in cooperativerelation with and spaced from the ledge'to facilitate removal of theclosure.

3. In combination a jar having a finish including an annular beadadapted to cooperate with the gasket of a closure to lock the closure insealing position, an annular ledge spaced slightly below the finish, apreformed closure including a top portion, a skirt depending therefrom,a gasket mounted on the inner face of the skirt, the lower edge of theskirt being bent to provide inwardly and outwardly extendingprojections, said inward projection-forming a support for the gasket andthe inward and outward projections in cooperative relation with andspac'ed from the ledge to facilitate removal of the closure.

MICHAEL A. GREENE. DANIEL M. GRAY.

